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Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]      
Foreign currency translation adjustment, tax (benefit) $ 233 $ 897 $ (2,002)
Derivative financial instruments adjustment, tax (benefit) (133) 818 (423)
Net gains or losses and prior service costs, benefit 13,231 (11,145) (20,032)
Amortization of prior service costs and net gains or losses, tax 5,398 3,749 2,232
Cash dividends declared (in usd per share) $ 0.28 $ 0.96 $ 0.18
Issued upon exercise of stock options, income tax (benefit) $ 188 $ 144 $ 76